mirror of
https://github.com/systemd/systemd.git
synced 2024-12-22 17:35:35 +03:00
Merge pull request #31181 from fbuihuu/gpt-auto-more-defensive
gpt-auto-generator: be more defensive when checking the presence of E…
This commit is contained in:
commit
4d0b06d535
7
NEWS
7
NEWS
@ -13,6 +13,13 @@ CHANGES WITH 256 in spe:
|
||||
section, then all assigned VLAN IDs on the interface that are not
|
||||
configured in the .network file are removed.
|
||||
|
||||
* systemd-gpt-auto-generator will stop generating units for ESP or
|
||||
XBOOTLDR partitions if it finds mount entries in the /boot/ or /efi/
|
||||
hierarchies in fstab. This is to prevent the generator from
|
||||
interfering with systems where ESP is explicitly configured to be
|
||||
mounted at some path, for example /boot/efi/ (this type of setup is
|
||||
obsolete but is still commonly found).
|
||||
|
||||
Network Management:
|
||||
|
||||
* systemd-networkd's proxy support gained a new option to configure
|
||||
|
@ -32,18 +32,22 @@
|
||||
|
||||
<para><filename>systemd-gpt-auto-generator</filename> is a unit generator that automatically discovers
|
||||
the root partition, <filename>/home/</filename>, <filename>/srv/</filename>, <filename>/var/</filename>,
|
||||
<filename>/var/tmp/</filename>, the EFI System Partition, the Extended Boot Loader Partition, and swap
|
||||
partitions and creates mount and swap units for them, based on the partition type GUIDs of GUID partition
|
||||
tables (GPT). See <ulink url="https://uefi.org/specifications">UEFI Specification</ulink>, chapter 5 for
|
||||
more details. It implements the <ulink
|
||||
<filename>/var/tmp/</filename>, the EFI System Partition (ESP), the Extended Boot Loader Partition
|
||||
(XBOOTLDR), and swap partitions and creates mount and swap units for them, based on the partition type
|
||||
GUIDs of GUID partition tables (GPT). See <ulink url="https://uefi.org/specifications">UEFI
|
||||
Specification</ulink>, chapter 5 for more details. It implements the <ulink
|
||||
url="https://uapi-group.org/specifications/specs/discoverable_partitions_specification">Discoverable
|
||||
Partitions Specification</ulink>.</para>
|
||||
|
||||
<para>Note that this generator has no effect on non-GPT systems. It will also not create mount point
|
||||
configuration for directories which already contain files or if the mount point is explicitly configured
|
||||
in <citerefentry
|
||||
project='man-pages'><refentrytitle>fstab</refentrytitle><manvolnum>5</manvolnum></citerefentry>. If
|
||||
the units this generator creates are overridden, for example by units in directories with higher
|
||||
project='man-pages'><refentrytitle>fstab</refentrytitle><manvolnum>5</manvolnum></citerefentry>. Additionally
|
||||
no unit will be created for the ESP or the XBOOTLDR partition if mount entries are found in the
|
||||
<filename>/boot/</filename> or <filename>/efi/</filename> hierarchies in <citerefentry
|
||||
project='man-pages'><refentrytitle>fstab</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
|
||||
|
||||
<para>If the units this generator creates are overridden, for example by units in directories with higher
|
||||
precedence, drop-ins and additional dependencies created by this generator might still be used.</para>
|
||||
|
||||
<para>This generator will only look for the root partition on the same physical disk where the EFI System
|
||||
|
@ -463,18 +463,6 @@ static int add_automount(
|
||||
return generator_add_symlink(arg_dest, SPECIAL_LOCAL_FS_TARGET, "wants", unit);
|
||||
}
|
||||
|
||||
static int slash_boot_in_fstab(void) {
|
||||
static int cache = -1;
|
||||
|
||||
if (cache >= 0)
|
||||
return cache;
|
||||
|
||||
cache = fstab_is_mount_point("/boot");
|
||||
if (cache < 0)
|
||||
return log_error_errno(cache, "Failed to parse fstab: %m");
|
||||
return cache;
|
||||
}
|
||||
|
||||
static int add_partition_xbootldr(DissectedPartition *p) {
|
||||
_cleanup_free_ char *options = NULL;
|
||||
int r;
|
||||
@ -486,14 +474,6 @@ static int add_partition_xbootldr(DissectedPartition *p) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
r = slash_boot_in_fstab();
|
||||
if (r < 0)
|
||||
return r;
|
||||
if (r > 0) {
|
||||
log_debug("/boot/ specified in fstab, ignoring XBOOTLDR partition.");
|
||||
return 0;
|
||||
}
|
||||
|
||||
r = path_is_busy("/boot");
|
||||
if (r < 0)
|
||||
return r;
|
||||
@ -523,18 +503,6 @@ static int add_partition_xbootldr(DissectedPartition *p) {
|
||||
}
|
||||
|
||||
#if ENABLE_EFI
|
||||
static int slash_efi_in_fstab(void) {
|
||||
static int cache = -1;
|
||||
|
||||
if (cache >= 0)
|
||||
return cache;
|
||||
|
||||
cache = fstab_is_mount_point("/efi");
|
||||
if (cache < 0)
|
||||
return log_error_errno(cache, "Failed to parse fstab: %m");
|
||||
return cache;
|
||||
}
|
||||
|
||||
static bool slash_boot_exists(void) {
|
||||
static int cache = -1;
|
||||
|
||||
@ -574,10 +542,6 @@ static int add_partition_esp(DissectedPartition *p, bool has_xbootldr) {
|
||||
* Otherwise, if /efi/ is unused and empty (or missing), we'll take that.
|
||||
* Otherwise, we do nothing. */
|
||||
if (!has_xbootldr && slash_boot_exists()) {
|
||||
r = slash_boot_in_fstab();
|
||||
if (r < 0)
|
||||
return r;
|
||||
if (r == 0) {
|
||||
r = path_is_busy("/boot");
|
||||
if (r < 0)
|
||||
return r;
|
||||
@ -586,15 +550,8 @@ static int add_partition_esp(DissectedPartition *p, bool has_xbootldr) {
|
||||
id = "boot";
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (!esp_path) {
|
||||
r = slash_efi_in_fstab();
|
||||
if (r < 0)
|
||||
return r;
|
||||
if (r > 0)
|
||||
return 0;
|
||||
|
||||
r = path_is_busy("/efi");
|
||||
if (r < 0)
|
||||
return r;
|
||||
@ -781,6 +738,18 @@ static int process_loader_partitions(DissectedPartition *esp, DissectedPartition
|
||||
assert(esp);
|
||||
assert(xbootldr);
|
||||
|
||||
/* If any paths in fstab look similar to our favorite paths for ESP or XBOOTLDR, we just exit
|
||||
* early. We also don't bother with cases where one is configured explicitly and the other shall be
|
||||
* mounted automatically. */
|
||||
|
||||
r = fstab_has_mount_point_prefix_strv(STRV_MAKE("/boot", "/efi"));
|
||||
if (r > 0) {
|
||||
log_debug("Found mount entries in the /boot/ or /efi/ hierarchies in fstab, not generating ESP or XBOOTLDR mounts.");
|
||||
return 0;
|
||||
}
|
||||
if (r < 0)
|
||||
log_debug_errno(r, "Failed to check fstab existing paths, ignoring: %m");
|
||||
|
||||
if (!is_efi_boot()) {
|
||||
log_debug("Not an EFI boot, skipping loader partition UUID check.");
|
||||
goto mount;
|
||||
|
@ -105,6 +105,34 @@ static int fstab_is_same_node(const char *what_fstab, const char *path) {
|
||||
return false;
|
||||
}
|
||||
|
||||
int fstab_has_mount_point_prefix_strv(char **prefixes) {
|
||||
_cleanup_endmntent_ FILE *f = NULL;
|
||||
|
||||
assert(prefixes);
|
||||
|
||||
/* This function returns true if at least one entry in fstab has a mount point that starts with one
|
||||
* of the passed prefixes. */
|
||||
|
||||
if (!fstab_enabled())
|
||||
return false;
|
||||
|
||||
f = setmntent(fstab_path(), "re");
|
||||
if (!f)
|
||||
return errno == ENOENT ? false : -errno;
|
||||
|
||||
for (;;) {
|
||||
struct mntent *me;
|
||||
|
||||
errno = 0;
|
||||
me = getmntent(f);
|
||||
if (!me)
|
||||
return errno != 0 ? -errno : false;
|
||||
|
||||
if (path_startswith_strv(me->mnt_dir, prefixes))
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
int fstab_is_mount_point_full(const char *where, const char *path) {
|
||||
_cleanup_endmntent_ FILE *f = NULL;
|
||||
int r;
|
||||
|
@ -25,6 +25,8 @@ static inline int fstab_has_node(const char *path) {
|
||||
return fstab_is_mount_point_full(NULL, path);
|
||||
}
|
||||
|
||||
int fstab_has_mount_point_prefix_strv(char **prefixes);
|
||||
|
||||
int fstab_filter_options(
|
||||
const char *opts,
|
||||
const char *names,
|
||||
|
Loading…
Reference in New Issue
Block a user